Swiss Legend Men's 40025-YG-BLK Throttle Chronograph Gold-Tone Watch Precise Swiss-Quartz movement Scratch-resistant-sapphire crystal Case diameter: 48 mm Ion-plating-gold-tone-stainless-steel case; Black dial; Date function; Chronograph functions Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving